Metal joint-fastener



H. J. 8: J. H. WELTEROTH. METAL JOINT FASTENER.

'No. 461,154. Patented O0t. 13 1891.

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UNITED STATES PATENT OFFICE.

HENRY J. W'ELTEROTH AND JOHN H. WELTEROTH, OF WILLIAMSPORT,

PENNSYLVANIA.

METAL JOINT-'FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 461,154, dated October13, 1891.

Application filed August 30, 1890. Serial No. 363,523- (No model.)

To all whom it may concern:

Be it known that we, HENRY J. WVELTEROTH and J. H. WELTEROTH, citizensof the United States, residing at Williamsport, in the county ofLycoming and State of Pennsylvania, have invented certain new and usefulImprovements in Metal Joint-Fasteners; and we do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same. V

The special object of the invention is to make a box-fastener to connectthe sides and ends by a tight joint.

Figure 1 of the drawings is a perspective view showing the simplest formof our boxfastener and embodying the principle of our invention; Fig. 2,an edge view, and Fig. 3 a view showing its application; Fig. 4, avertical section to show the relative thickness of the upper and loweredge of the fastener.

In the drawings, A represents a plate of metal with the upper edgeablunt, so as to be conveniently struck with a hammer or other suitabletool, while the opposite edge a is sharp, so as to permit it to bedriven into two pieces of board 13 0, about one-half in each, as shownin Fig. 3 of the drawings. From the edge a, to the edge a. extend thedownwardlyinclined corrugations a converging toward each other frombottom to top. This forms awedge-space D, where the twomiddlecorrugations straddle the joint. This entirely prevents thefastener from drawing out from the influence of the weather upon thewood.

Any two pieces of wood may be thus held permanently together withoutfear that they will become loose, so as to be easily removed, or permitthe box to be collapsed by a weight, pressure, or other force.

The length from a to a may be varied to suit the purpose for which theyare intended, and the width from a to a may be greater or less, allbeing merely modifications of the simplest form illustrated in Fig. 1 ofthe drawings and embodying the same idea or principle. The corrugationsmay be more or less.

We are aware that hollow pointed nails have been corrugated on theirsides, and also that j oint-fasteners have been made with parallel anddiagonal corrugations; but

NVhat we claim as new is A sheet-metal joint-fastener having the twosets a a of corrugations inclined vertically to form the wedge-space Dbetween them, as and for the purpose set forth.

In testimony whereof we aflix .our signatu res in presence of twowitnesses.

HENRY J. VVELTEROTH. JOHN H. WELTEROTH. Witnesses:

J. S. MAoeILL, W. S. YERKES.

